Lithic is the modern card issuing and processing platform empowering ambitious financial companies to build the future of payments.
Our infrastructure powers card programs for 100+ innovative clients, from fintechs reimagining credit and digital banking to platforms transforming disbursements and spend management. Companies like Mercury, Flex, and Novo rely on Lithic's developer-friendly APIs, direct network connections, and flawless reconciliation to launch and scale card programs in weeks, not years.
We're building a future where access to better financial products materially improves people's lives, free from the constraints of 30-year-old mainframes and legacy processors. We're proud to be backed by world-class investors who share that vision, including Bessemer Venture Partners, Index Ventures, Spark Capital, Stripes, and Mastercard, along with many others.
We're a team of 170+ across 26 states and 7 countries, headquartered in New York City.
We are hiring a Senior Software Engineer for the Product Platform team, which owns the foundational layer of our API that all other Lithic products build on top. The team’s mission is to make Lithic's API the best in fintech — reliable, consistent, and a joy to integrate with. This includes API Gateway, Events Platform, API key management and authorization, audit logging, or API norms and versioning strategy.
Job responsibilities:- Write reliable, secure, and scalable code for Lithic's product platform with minimal tech debt
- Improve the reliability of systems in team’s scope and participate in the team on-call rotation
- Own projects from planning to launch, spanning areas like API key management, reliability, audit logging, or search, keeping stakeholders informed and aligned along the way
- Lead efforts to improve systems and processes within the team
- 4+ years building production backend systems, ideally including public-facing APIs at scale
- Experience in or desire to learn Rust; ability to understand Lithic’s system written in other programming languages (Python, Java)
- Interest and experience in leveraging AI tools to enhance productivity
- Ability to navigate ambiguity, align diverse perspectives, and drive toward practical solutions
- Experience with API design fundamentals and product thinking: versioning, backward compatibility, schema-driven development, and weighing tradeoffs from the customer's perspective
- Comfort with designing systems from scratch and owning the product development process end-to-end
- Strong written communication skills and experience working in a remote, async-first team that’s spread across time zones
The annual US salary range for this role is $160,000 to $200,000 plus equity. This salary range may be inclusive of several career levels at Lithic and will be narrowed during the interview process based on the candidate’s experience and qualifications.
This is a remote position. However, candidates must be located in the United States, Canada, Netherlands, Poland, or Czech Republic. We do not offer visa sponsorship or assistance.
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- Unlimited PTO
- 12-weeks fully paid parental leave
- 4-Week Fully Paid Sabbatical (earned at your 5-year anniversary)
- Work From Anywhere: work from anywhere in the world 4-weeks each year
- 3% cashback on card purchases with your complimentary Privacy.com employee account
- Health, vision, and dental insurance; HSA Contribution Match
- 401(k) match
- Voluntary Life Insurance and STD/LTD
NYC-based employees work from our SoHo office three days a week. Tuesdays and Thursdays are our core days, and you'll choose a third day that works for your schedule and team needs.
In-office employees receive:
- Commuter benefit
- Catered lunch every Tuesday and Thursday
Skills Required
- 4+ years building production backend systems
- Experience building public-facing APIs at scale
- Experience with Rust or willingness to learn Rust
- Ability to understand systems written in Python and Java
- Interest and experience leveraging AI tools to enhance productivity
- Ability to navigate ambiguity, align diverse perspectives, and drive practical solutions
- Experience with API design fundamentals, including versioning, backward compatibility, schema-driven development, and customer-focused tradeoffs
- Experience designing systems from scratch and owning product development end to end
- Strong written communication skills
- Experience working in a remote, async-first team across time zones
Lithic Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Lithic and has not been reviewed or approved by Lithic.
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Healthcare Strength — Health coverage includes medical, dental, and vision, with descriptions of comprehensive plans and even unlimited mental‑health therapy coverage. Company materials also note contributions toward premiums.
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Leave & Time Off Breadth — Time‑away policies include flexible/unlimited PTO and a fully paid four‑week sabbatical after five years. Paid holidays and bereavement leave are also cited.
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Parental & Family Support — Family support features 12 weeks of fully paid parental leave for new parents. This policy is prominently listed alongside other core benefits.
Lithic Insights
What We Do
Before Lithic, we started Privacy.com in 2014 to build the safest and easiest way for consumers to pay online. We worked with a legacy issuer processor and it took us over a year to launch our card program. Even after we were up and running, scaling and ongoing maintenance were a pain—batch processing delays, scheduled downtime windows, and black-box systems we couldn't debug. From this experience, we learned firsthand that the financial services supply chain is broken—in the United States, the industry is still dominated by 30-year-old companies that run on mainframes. So we built Lithic, the issuing and processing infrastructure we always wanted, with developer-friendly, modern, well-documented APIs, insanely fast speed-to-market, and flawless reconciliation—purpose built to give card issuers extremely high levels of observability, control, and flexibility over their card programs. We own the entire technical stack: direct connections to Visa, Mastercard, and Amex, our own authorization engine delivering sub-100ms responses, an immutable ledger system, and real-time webhooks for every transaction event. Today, we power card programs for 100+ innovative companies including Mercury and Privacy.com—maintaining 99.99+% uptime without maintenance windows while processing billions in payment volume. And we're just getting started. Lithic currently has 150+ employees in 26 states and 6 countries, with an HQ in NYC, backed by Bessemer, Index, and Stripes.
Why Work With Us
Our team is at the center of everything we do. But we know that work isn't everything, we value flexibility and quality benefits. We strive to be a place where you know your ideas are always heard, you and your teammates learn from each other and make each other better, and you know your work is impacting users and the industry at large.
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